Table 1 Evaluation of the accuracy of the developed method
Concentration levels | No. of observations | Weight of nitrate (Equivalent sample) (mg/100 ml) | Resulted in quantity (mg) | Recovery of the sample (%) | Average (%) | SD (%) | RSD (%) |
|---|---|---|---|---|---|---|---|
| Â | 1 | 8.00 | 8.030 | 100.186 | Â | Â | Â |
80 ppm | 2 | 8.10 | 8.016 | 98.958 | Â | Â | Â |
| Â | 3 | 8.00 | 8.017 | 100.207 | Â | Â | Â |
| Â | 1 | 10.00 | 9.916 | 99.161 | Â | Â | Â |
100 ppm | 2 | 9.90 | 9.908 | 100.081 | 99.6023 | 0.5165 | 0.5185 |
| Â | 3 | 10.00 | 9.918 | 99.179 | Â | Â | Â |
| Â | 1 | 12.00 | 11.973 | 99.779 | Â | Â | Â |
120 ppm | 2 | 12.10 | 11.983 | 99.034 | Â | Â | Â |
| Â | 3 | 12.00 | 11.980 | 99.836 | Â | Â | Â |